Federal Signal AD-26C-4 - Atkinson Dynamics Wall Mount Intercom, 12VDC, Primary Unit, Extreme Conditions - Available in 12VDC, 24VDC, 120VAC or 240VAC. Heavy-duty industrial intercom for indoor or outdoor applications. Single channel, two-way communications. Integrated volume control and Talk/Listen switch. Balanced line output. 25 watt speaker. Cast aluminum housing with rugged powder coat finish. Conformal coated PCB. Type 4X enclosure. Marine Listed. CSA Certified. UL and cUL Listed.
Federal Signal

AD-26C-4

Alternate Item Number: ad-26-atkinson-dynamics-intercom

UPC: 782979204831


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Overview

The Federal Signal AD-26C-4 is a heavy‑duty, primary intercom unit designed for both indoor and outdoor use in the most demanding environments. Built on a 12VDC power supply, it delivers reliable two‑way communication with integrated volume control and a Talk/Listen switch for seamless operation. The unit features a cast aluminum housing finished with a rugged powder coat, providing durability against harsh weather and mechanical impact. Its conformal coated PCB and Type 4X NEMA enclosure ensure protection against dust, moisture, and temperature extremes, making it suitable for marine, construction, and industrial applications. With a balanced line output and a 25‑watt speaker, the AD-26C-4 delivers clear audio quality. The wall‑mount design allows for easy installation on various surfaces, while the product’s CSA, UL, and cUL certifications guarantee safety and compliance. Whether you need a reliable intercom system for a warehouse, a construction site, or a marine vessel, the Federal Signal AD-26C-4 provides performance, durability, and peace of mind. Key benefits include: - 12VDC operation for low‑voltage compatibility - Rugged aluminum housing with powder‑coat finish - Type 4X NEMA rating for extreme environmental protection - Wall‑mount capability for versatile installation - Two‑way talk/listen with integrated volume control - Certified for CSA, UL, and cUL standards - Marine‑listed for water‑resistant performance - Balanced line output and 25‑watt speaker for clear audio Choose the AD-26C-4 for a robust, reliable intercom solution that meets the toughest industrial demands.
  • 12VDC voltage rating
  • Aluminum housing with rugged powder coat finish
  • Type 4X NEMA enclosure for extreme conditions
  • Wall mount design for versatile installation
  • Two‑way talk/listen with integrated volume control

Specifications

-31 to 150
DEG F
12
VDC
12 Vdc
V
5.03
IN
6.5
in
9.88
IN
Application
Indoor/Outdoor
Brand Name
Federal Signal
Enclosure
Type 4X
Frequency Response
320 Hz - 8.0 kHz
Height
9.88 IN
Length
5.03 IN
Material
Cast Aluminum
Mounting
Wall
Mounting Type
Wall Mount
Nema Rating
Type 4X
Number Of Lines
One
Operating Current
1.47 AMP
Operating Temperature
-31 to 150 DEG F
Operating Temperature, Maximum
150 F
Operating Temperature, Maximum
65.5556 C
Operating Temperature, Minimum
-31 F
Operating Temperature, Minimum
-35 C
Operating Voltage
12VDC
Series
AD-26C
Special Features
Balanced Line Output
Standard
CSA,Marine,UL,cUL
Standard
UL Listed/cUL Listed/CSA Certified/Marine Listed
Sub Brand
Atkinson Dynamics
Type
Wall Mount Intercom
Type
Intercoms
Voltage Rating
12 Vdc
Width
6.5 IN
Package Dimensions (L x W x H)
8.13 IN x 7.25 IN x 15.13 IN
Package Dimensions (L x W x H)
20.6502 cm x 18.415 cm x 38.4302 cm
Package Weight (Imperial)
10.000 L
Package Weight (Metric)
4.536 kg
Atkinson Dynamics Wall Mount Intercom, 12VDC, Primary Unit, Remote Power, Foot Pedal Ready - Available in 12VDC, 24VDC, 120VAC or 240VAC. Heavy-duty industrial intercom for indoor or outdoor applications. Single channel, two-way communications. Integrated volume control and Talk/Listen switch. Balanced line output. 25 watt speaker. Cast aluminum housing with rugged powder coat finish. Conformal coated PCB. Type 4X enclosure. Marine Listed. CSA Certified. UL and cUL Listed.

AD-26C-1-2

Atkinson Dynamics Wall Mount Intercom, 12VDC, Primary Unit, Remote Power, Foot Pedal Ready - Available in 12VDC, 24VDC, 120VAC or 240VAC. Heavy-duty industrial intercom for indoor or outdoor applications. Single channel, two-way communications. Integrated volume control and Talk/Listen switch. Balanced line output. 25 watt speaker. Cast aluminum housing with rugged powder coat finish. Conformal coated PCB. Type 4X enclosure. Marine Listed. CSA Certified. UL and cUL Listed.
MINI OS WITH ID CARD READER_AL

M21312P1-A

MINI OS WITH ID CARD READER_AL

Frequently Asked Questions

What are the main features of these intercoms?

These wall-mount intercoms offer single-channel, two-way communication, integrated volume control, a TALK/LISTEN switch, and a 25-watt speaker. They feature a corrosion-resistant cast aluminum housing.

What environments are these intercoms designed for?

They are heavy-duty industrial intercoms suitable for both indoor and outdoor applications. They are also Marine Listed and feature a Type 4X enclosure.

What power options are available for these intercoms?

These intercoms are available in 12VDC, 24VDC, 120VAC 50/60Hz, or 240VAC 50/60Hz models.

What is the operating temperature range for the intercoms?

The intercoms can operate in temperatures ranging from -31°F to 150°F (-35°C to 66°C).

What are the physical dimensions of the wall-mount intercoms?

The intercoms have a height of 9.88 in, a width of 6.50 in, and a depth of 5.03 in.

What is the speaker's power rating?

Each intercom is equipped with a reliable 25-watt speaker.

What certifications do these intercoms have?

These heavy-duty units are UL and cUL listed, CSA Certified, and Marine rated.

What is the net weight of the intercom unit?

The net weight of the intercom unit is 9 lbs (4.08 kg).

What is the frequency response range?

The frequency response for all models is 320Hz to 8.0Khz.

What is the operating current for the AD-26 model?

The AD-26 model operates on 12VDC with an operating current of 1.47 A and a standby current of 100 mA.

How to Install the Atkinson Dynamics AD-26C-4 Intercom

This guide provides step-by-step instructions for the installation and initial setup of the Atkinson Dynamics AD-26C-4 intercom system.

Estimated time: 45m

Tools needed:

Screwdriver, Wire strippers, Multimeter

Supplies needed:

Mounting screws, 1K, 1W resistor, Audio cables

  1. Select the mounting location

    Choose a flat and rigid surface for mounting the intercom, ensuring it can support the weight of the unit. Consult with the facilities and safety engineer for proper placement.

  2. Mount the intercom

    Secure the intercom to the selected surface using the two mounting ears and appropriate screws. Ensure it is level and firmly attached.

  3. Connect the power supply

    Plug the intercom into a nearby power source. For AC models, connect the hot wire to the black terminal, neutral to the white terminal, and ground to the green terminal. For DC models, connect the positive DC power to the black terminal and the common to the white terminal.

  4. Wire the audio connections

    Connect the audio inputs in parallel using properly sized audio cables. Optionally, install the included 1K, 1W resistor across the audio lines to reduce noise.

  5. Perform initial testing

    After all connections are made, restore power and test the intercom system by pressing the talk switch and ensuring audio is transmitted and received correctly.

  6. Calibrate the system

    Adjust the volume controls on the intercom to the desired levels for both incoming and outgoing audio. Ensure that the system operates without feedback or distortion.

Frequently Asked Questions about Federal Signal

What certifications and standards do Federal Signal products comply with?

Federal Signal products are certified across multiple international standards, including UL (Underwriters Laboratories) in the USA, CSA (Canadian Standards Association), CE (European Community), UKCA (United Kingdom), EAC (Russia), and C-Tick (Australia and New Zealand). Their products meet rigorous safety and performance standards for industrial environments, with specific compliance in electrical equipment enclosures, functional safety, and environmental protection ratings.

What is Federal Signal's warranty policy?

Federal Signal offers a comprehensive limited warranty covering most products for 1-5 years from the date of delivery, with specific terms varying by product category. Mechanical sirens, beacons, speakers, and sounders typically receive 5-year parts and labor coverage, while electronic sirens and controllers generally have 2-year warranties. All warranties require return to the factory for service, and on-site services are not included. Certain components like domes, lenses, lamps, and batteries are specifically excluded from warranty coverage.

What industries and applications are Federal Signal products used for?

Federal Signal products are used across multiple critical industrial and municipal sectors for notification, communication, and safety systems. Their product lines cover essential applications including fire alarm systems, public address and telephony, outdoor warning systems, visual and audible signals, and emergency communication networks. Key industries served include manufacturing, municipal emergency services, industrial facilities, and infrastructure environments where clear, reliable communication and safety signaling are paramount.

What technical support does Federal Signal offer?

Federal Signal offers comprehensive technical support through their dedicated [email protected] email and direct phone line at +1 708.534.4756. Their support covers a wide range of notification and communication solutions, including technical assistance for products in public address, telephony, fire alarm, visual and audible signals, outdoor warning systems, and intercoms.

What are the main product lines offered by Federal Signal?

Federal Signal offers comprehensive notification and communication solutions across multiple product lines, including Visual Signals, Audible Signals, Telephony, Intercoms, Fire Alarm, Outdoor Warning Systems, Public Address, and Initiating Systems. Their product range is designed to provide clear communications and critical process notifications that enhance safety and compliance in industrial and public environments.

What are the key features of Federal Signal products?

Federal Signal products are comprehensive notification solutions designed to enhance safety and communication across industrial environments. Their key features include visual and audible signals, fire alarm systems, outdoor warning systems, public address capabilities, telephony, and intercoms. These products provide critical process notifications, ensure safety compliance, and offer advanced technologies like secure encrypted communication, cloud-based control systems, and customizable emergency response interfaces.

What environmental ratings do Federal Signal products have?

Federal Signal products offer robust environmental ratings across multiple standards, including UL 508A, CSA, NEMA, and IEC 60529. Their enclosures are rated for Type 1, 2, 3, 4, 4X, 12, and 13 environments, with IP66 protection, and can operate in temperatures ranging from -40°F to 266°F. These ratings ensure superior protection against dust, water, corrosion, and extreme conditions for indoor and outdoor industrial applications.

What accessories are available for Federal Signal products?

Federal Signal offers multiple accessories for their signaling products, including coupling kits, cable entry adapters, indicator rings, legend plates, and mounting brackets. Key accessories include E-Box endcap kits with M20 and M25 openings, U-Brackets for dual configurations, and color-coded indicator rings in black, blue, green, magenta, red, and yellow. Additional options like adapters for NPT connections and specialized mounting hardware are also available for their Global Series signaling platforms.

What communication protocols do Federal Signal products support?

Federal Signal supports multiple industrial communication protocols including PROFIBUS DP, PROFINET, EtherNet/IP, CANopen, and Modbus RTU. These protocols enable flexible network integration across various industrial automation environments, supporting both traditional fieldbuses and modern Ethernet-based communication standards.

How are Federal Signal products typically installed?

Federal Signal products are typically installed using professional mounting configurations that include wall brackets, base stations, and specialized mounting hardware. Depending on the specific product line—such as outdoor warning systems, visual signals, or audible signals—installation involves precise mounting options like wall-mount antenna brackets, base station radio packages, and modular component assemblies. Each product configuration includes specific mounting accessories like endcaps, adapters, and terminal blocks to ensure secure and compliant installation in industrial and safety-critical environments.